/*
 * Copyright (c) 2020-2021 Heiko Bornholdt and Kevin Röbert
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
 * OR OTHER DEALINGS IN THE SOFTWARE.
 */
package org.drasyl.example.chat;

import javax.swing.JTextField;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;

@SuppressWarnings({ "java:S110" })
public class JTextFieldWithPlaceholder extends JTextField {
    private final String placeholder;

    public JTextFieldWithPlaceholder(final int columns, final String placeholder) {
        super(columns);
        this.placeholder = placeholder;
    }

    public JTextFieldWithPlaceholder(final String placeholder) {
        this(0, placeholder);
    }

    @Override
    public void paintComponent(final Graphics g) {
        super.paintComponent(g);

        if (super.getText().length() > 0 || placeholder == null) {
            return;
        }

        final Graphics2D g2 = (Graphics2D) g;

        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g2.setColor(super.getDisabledTextColor());
        g2.drawString(placeholder, getInsets().left, g.getFontMetrics().getMaxAscent() + getInsets().top);
    }
}
